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12
Faults and corrective action required
Faults indecated by flashing yellow light
Fault
1. The extractor will not start. Yellow
light flashing.
2. The extractor has switched to
braking during extraction. The
extractor will not restart.
3. The yellow light starts flashing upon
braking. The brake switches off and
the extractor remains locked.
4. No signal comes from the machine´s
mechanical rotation guard upon
braking (at the point where the drum
begins to rotate anticlockwise).
The drum rotates anticlockwise for
approx. 1 1/2 minutes and then
braking switches off and the yellow
light starts to flash (time varies
according to machine type, load and
frequency).
The extractor´s lid remains locked.
5. The signal from the machine´s
mechanical rotation guard is
constantly active. Braking switches
off immediately. The extractor lid
remains locked.
The yellow light flashing after
approx. 1 1/2 minutes.
motor is faulty-
12.12
12. Functions sequences
Possible cause
Reed element ring in the deck is
defective
The Reed in the deck or the micro-
switch SW1 has developed a defect
during extraction.
The Hall element of the is
defective.
• The microswicth of the rotation
guard has stuck in its rest position.
• The motor brake pads are worn
• The microswitch of the rotation
guard has moved from its position.
The rotation guard microswitch has
burnt out in the active position.
Service
manual
Action
Disconnect main power supply to
extractor. Check that the two
connentions of the Reed ring to the
circuit board for automatic functions are
OK. If they are sound, replace the Reed
ring.
Disconnect main power supply to
extractor. Check that the two connections
of the Reed ring to the circuit board for
automatic functions are OK. If they are
sound, replace the Reed ring. Check that
the microswitch SW1 is OK.
Disconnect main power supply to
extractor. Check the 3-pole connection
to the circuit board. If this is sound,
replace the motor.
Disconnect main power supply to
extractor. Remove cover of automatic
control unit. Open extractor lid manually
by pressing the yoke of the traction
magnet upwards.
Connect a multimeter between
connections 502 AC and 503 AC (S1:2-7)
Turn the drum anticlockwise by
hand. If the rotation guard is sound the
meter should react.
If the meter does not react - check the
contacts in the 4-pole connection block
X8/X9) and the 3-pole connection block
X10/X11.
If contact is correct from X10 to S1
replace the motor.
Disconnect main power supply to
extractor. Remove cover of control unit
Open extractor lid manually by pressing
the yoke of the traction magnet
upwards.
Connect a multimeter between
connections 502 AC and 503 AC (S1:2-7)
If the rotation guard is sound the meter
should react.
if the meter does not react - check wires
and connection blocks X8/X9 and
X10/X11 for short circuits.
If there is no short circuit in the control
unit, the microswitch in the
replace the motor.
487 03 29 91